Nothing like performance driving in the rain! Its a hoot! Basically just like a full day on the skidpad without tearing your tires up.
Smooth is fast. Keep the car balanced by using the steering, brake, and throttle linearly - no big "step" inputs! Michelin Pilot Sports are some of the best tires in the wet - they have almost as much grip wet as when dry but don't let the temptation get to you: start slow and build speed.
Please post up some pic's afterward.